CVE-2019-25554 in MP4 Converter
Summary
by MITRE • 03/21/2026
Tomabo MP4 Converter 3.25.22 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the Name field. Attackers can trigger a buffer overflow by pasting a large payload into the Name parameter when adding a preset in the Video/Audio Formats options, causing the application to crash when Reset All is clicked.
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Analysis
by VulDB Data Team • 03/21/2026
The vulnerability identified as CVE-2019-25554 affects Tomabo MP4 Converter version 3.25.22 and represents a classic buffer overflow condition that manifests as a denial of service attack. This flaw exists within the application's handling of user input in the Name field during preset creation, specifically when users interact with the Video/Audio Formats options. The vulnerability stems from inadequate input validation and bounds checking mechanisms within the software's string processing functions, creating an exploitable condition that can be triggered through deliberate manipulation of the application's user interface.
The technical implementation of this vulnerability involves the manipulation of the Name parameter field within the application's preset management system. When attackers supply an excessively long string to the Name field, the application fails to properly validate or limit the input length, allowing the data to overflow the allocated buffer space. This buffer overflow condition specifically occurs during the Reset All operation, indicating that the malformed input is processed and stored in memory before the crash is triggered. The vulnerability operates at the application layer and requires local user interaction, making it a local privilege escalation vector that can be exploited by attackers with access to the system.
From an operational perspective, this vulnerability presents a significant risk to system availability and user experience within environments where Tomabo MP4 Converter is deployed. The denial of service condition effectively renders the application unusable until manually restarted, potentially disrupting workflow processes and requiring administrative intervention for recovery. The impact extends beyond simple application instability as it can be leveraged by malicious actors to repeatedly crash the software, creating a persistent availability issue. This vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and demonstrates how insufficient input validation can lead to system instability and service disruption.
The attack surface for this vulnerability is relatively constrained but significant within the context of local system access. Attackers must already have local access to the target system and the ability to interact with the application's graphical user interface to exploit this condition. However, the low complexity of the attack vector makes it particularly dangerous as it requires minimal technical expertise to execute successfully. The vulnerability can be classified under ATT&CK technique T1499.004, which covers network denial of service attacks, although in this case it represents a local denial of service condition that affects application availability rather than network resources. Security professionals should consider this vulnerability as part of broader application security assessments and implement proper input validation measures to prevent similar conditions from occurring in other software components.
Mitigation strategies for CVE-2019-25554 should focus on immediate input validation implementation and application hardening measures. Organizations should prioritize updating to the latest version of Tomabo MP4 Converter where this vulnerability has been addressed through proper bounds checking and input length limitations. System administrators should also implement monitoring solutions to detect unusual application crash patterns that might indicate exploitation attempts. Additionally, security awareness training for end users can help prevent accidental exploitation through social engineering attacks that might attempt to trick users into pasting malicious payloads into the application. The vulnerability serves as a reminder of the critical importance of input validation and proper buffer management in preventing both denial of service conditions and potential privilege escalation scenarios that could be leveraged by more sophisticated attackers.